After you have changed your major passwords, you can reset passwords for less important services. Deal with financial and personal information first. Or use the Find My app on another Apple device that you own. Look for your device on a map To find your device, sign in to /find. This typically includes email, bank accounts, Facebook, and online storage. If you lose your iPhone, iPad, or iPod touch or think it might be stolen, use Find My and protect your data. Start with your most important passwords. You can probably get a bit panicky if you lose your iPhone or believe that it has been stolen.This will minimize the potential damage someone could do with access to your information, and if you do find your phone then using new passwords is only a minor inconvenience. It's better to take the time to reset your passwords and logins before physically hunting further for your phone.If you're worried that the phone is in someone else's hands, the sooner you do this the better, as identity theft is a serious and widespread issue.You may also want to cancel any credit/debit cards that were registered to any online stores through that device (like the App store, for example).

For some, this may be very little, while for others, it could be a huge task. The speed with which you need to do this and the extent of it will depend on how much you use your phone for online interaction.

How to find lost iphone